A random varible X has its range :1,2,3}. If `P(X=1)=c, P(X=2)=3c,P(X=3)=5c,` then c=

A: A random variable X has the range {1,2,3}. If P(X=1)=c, P(X=2)=3c,P(X=3)=6c then c=1//10 . R: If : S rarr R is a discreate random variable with range (x_(1), x_(2), x_(3),…………}" then" sum _(r=1)^(infty) (X=x)=1

A random variable X has its range {1,2,3}. If P(X=1)=1//6, P(X=2)=1//3.P(X=3)=1//2 then mean =

A random avriable X has its range {1,2,3} . P(X=1)=1//6, P(X=2)=1//3, P(X=3)=1//2 . If mean =a, variance =b and standard =c then the descending order of a,b,c, is

A random variable X has its range (1 2 3} If P(X=1)=alpha P(X=2)=beta, p(X=3)=(1)/(6) and the mean is (5)/(3) then alpha , beta=

A random variable X has its range {0,1,2,3,………}. If P(X=r)=(c(r+1))/(2^(r)) for r=0,1,2,……….. Then c=

A random variable X has its range {0,1,2,3,………}. If P(X=r)=(c(r+1))/(2^(r)) for r=0,1,2,……….. Then c=

The range of a random variable X is {0, 1, 2}. Given that P(X=0)=3c^(3),P(X=1)=4c-10c^(2),P(X=2)=5c-1 where c is constant. Find (i) the value of c (ii) P(X lt 1) (iii) P(1lt X le2) (iv) P(0lt X le3)